Imaging Procedure: Each eligible patient, who provides consent for the study, will undergo a MR imaging screening questionnaire. If the patient has no contraindications, an intravenous line will be placed into a vein in the patient's arm and the patient will be placed prone with her breasts in a dedicated MRI breast coil. The patient will be given earplugs to decrease the noise level while in the magnet during the 45 minute total time period. High-resolution MRI sequences of the breasts and axillary regions will be performed before and after a gadolinium-DTPA bolus injection as per ordered clinical breast MRI protocol. Afterwards, one diffusion-weighted (DW) MRI sequence of the breast(s) will be performed. The DW sequence takes approximately 90 seconds.